There were originally two wooden chapels in Kustavi, one in Vartsala (first record from the year 1554) and another in Kunnarainen (1675). In 1783 Kunnarainen chapel was moved to the current site and reconstructed by J. Höckert. The new parish church was named after the king of Sweden, Gustaf III. The church was enhanced between years 1876-1879 and again in 1928.
The pulpit dates back to the 1640s. There are also couple of beautiful miniature ships (so-called votive ships) made by local islanders. The church environment is a well-preversed sample of wooden architecture in Finland.
House of the Blackheads (Melngalvju nams) is a building situated in the old town of Riga. The original building was erected during the first third of the 14th century for the Brotherhood of Blackheads, a guild for unmarried German merchants in Riga. Major works were done in the years 1580 and 1886, adding most of the ornaments.
The structure was bombed to a ruin by the Germans June 28, 1941 and the remains demolished by the Soviets in 1948. The current reconstruction was erected from 1995 to 1999. Today the House of Blackheads serves as a museum and sometimes concert hall.